Feeding device for producing spiral stitches



H. ADLER.

FEEDING DEVICE FOR PRODUCING SPIRAL STITCHES.

APPLICATION FILED FEB. 1, 1919.

1,340,099. P11611111 May 11, 1920.

, 2 SHEETS-SHEET I.

WITNESSES I INVENTOR I hermanAd/er I '40 By W -11. ATTORNEYS H. ADLER.

FEEDING DEVICE FOR PRODUCING SPIRAL STITCIIES.

HERMAN ADLER, OF NEW YORK, N. Y.

FEEDING DEVICE FOR PRODUCING SPIRAL STITCHES.

Application filed February 1, 1919.

T all whom it may concern:

Be it known that I, HERMAN ADLER, a subject of the King of Roumania, and a resident of New York city, Richmond Hill, borough of Queens, in the county of Queens and State of New York, have invented a new and Improved Feeding Device for Producing Spiral Stitches, of which the following is a full, clear, and exact description.

My invention has for its object to provide a simple, cheap and eflicient means for automatically moving a work holder transversely as it is advanced by a sewing machine feeder through the sewing process.

Other objects of the invention are to provide efiicient means for quickly adjusting the work holder transversely relative to the sewing machine needle, and for actuating the stopping means for the sewing machine when the member moves transversely a predetermined distance. 1

Additional objects of the invention will appear in the following specification in which the preferred form of my invention is described.

In the drawings similar reference characters refer to similar parts in all the views, in which- Fig. 1 is a side elevation of my invention;

Fig. 2 is an end view of Fig. 1;

Fig. 3 is an enlarged plan view showing my attachment;

Fig. 4 is a sectional view on the line 4-4 of Fig. 3;

Fig. 5 is a sectional view on the line 5-5 of Fig. 3; and

Fig. 8 is a fragmentary perspective view showing the means for stopping the sewing machine.

By referring to the drawings, it will be seen that a plate 10 is secured to the side 11 of an open sewing machine frame 12. Brackets 13 are secured to the plate 10 by means of screws 14. It will be seen by referring to Fig. 1 of the drawings, that the plate 10 has slots 15 through which screws 16 extend-which secure the plate 10 to the side 11 of the frame. These slots 15 permit of adjustment, so that the plate with the operating members may be readily adjusted to the sewing machine.

A shaft 17 is journaled in bearings 18 in the brackets 13 and this shaft 17 has a thread 19. A sleeve is slidably and rotatably mounted on the shaft 17 beyond the Specification of Letters Patent.

. the frame.

Patented May 11 1920.

Serial No. 274,388.

screwthread 19. To the top of the sleeve 20 there is secured a work holder 21, the construction of which will shortly be described. Secured to. the side of the sleeve 20, there is a spring 22 to Which a half nut 23 is secured, the spring 22 serving to press the half nut 23 yieldingly against the screw thread 19. It will be understood that when the shaft 17 is rotated, the screw threads 19 meshing with the thread in the half nut 23 will move the sleeve 20 along. the shaft 17 by means of the spring 22. At any time desired, the sleeve 20 together with the work holder may be adjusted longitudinally of the shaft 17 by moving the half nut 23 forwardly out of engagement with the screw thread 19'and sliding the sleeve 20 on the shaft 17 until the work holder 21 is in the desired position. The half nut 23 may then be permitted to return to operative position, the spring serving to hold the threads of the half nut 23 in engagement with the screw thread 19.

As has been stated, the plate 10 with the brackets 13 and the shaft 17 may readily be adjusted to a sewing machine. The sewing machine has a rotary hook shaft 24 mounted within the open frame 12, the shaft 24 being journaled in bearings 25 and 26 secured to A third shaft 27 is provided which extends through an opening 28 in the side 11 of the frame 12, and the shaft 27 being also journaled in a bearing 29. Gearing 30 connects the shaft 24 with the shaft 27, and gearing 31 connects the shaft 27 with the shaft 17. This gearing is such that the rate of rotation of the shaft 17 may be considerably less than the rate of rotation of the shaft 24. This shaft 24 is driven by connection with a sewing machine through a sprocket 32, secured to the. shaft 24, and a sprocket chain 33 which engages the sprocket 32 and is driven by the sewing machine mechanism. It will be understood that the gearing 31 may be changed to obtain a faster or'slower motion of the work carrier 21, and the slots 15 permit of the adjustment of the plate 10 to insure the meshing of the gearing after the change has been made.

As best illustrated in Figs. 1 and 2, there is a bearing 34 in the depending portion of the sleeve 20, and in this bearing 34 there is disposed a bent arm 35 which is held in adjusted position by a set screw 36. The bent portion 37 of this arm is disposed for engaging an arm 38 of a lever 39 fulcrumed at 40 to a table on which the sewing machine is mounted, the other arm 41 of lever 39 engaging an arm 42 of a clutch. operating member 43. As has been stated, the arm 35 may be, adjusted relatively to the sleeve 20, so that the bent portion 37 of the arm 35 will engage the arm 38 of the lever 39 when the work carrier 21 is in a predetermined position relative to the sewing machin needle 44.

The bottom 45 of the work carrier 21 is secured to the sleeve 20. This bottom mem ber 45 of the work carrier has sides 46 and 47. The top 48 ofthe work carrier is hinged to the side 46 at 49. A finger 50 is pivoted to the top 48 of the work carrier, this finger 50 being adapted to engage a catch 51 secured to the side.47. With this construction the work carrier 21 may be opened as shown by the dotted lines in Fig.4 of the drawings,

and the material to be sewed, such as a hat brim 52, may be inserted, after which the work carrier may be closed, the finger 50 being moved to the position shown in Fig. 3 of the drawings and; the set screw 53, which is the pivot for the finger 50, may be turned home to lock the finger in engagement with the catch 51.

In using the invention, the operator opens the top 48 of the work carrier 21 and places the work in the said carrier when the top 48 is closed and by turning the finger 50 into engagement with the catch and then turning the set'screw 53, the carrier is locked. The operator then disengages the half nut 23 from the thread. 19 on the shaft 17, and by taking hold of the lower portion of the sleeve 20, he moves the sleeve with the work carrier 21 to any desired starting position, after which the operator permits the half nut to move into mesh with the thread 19 under the influence of the spring 22. The arm 38 is then raised to an upright position which moves the arm 41 into contact with the arm 42, thereby moving the clutch operating member 43 into operating or running position. When the arm 35 is adjusted and held in adjusted position by the set screw 36, the portion 37 of the arm 35 will come into engagement with the arm 38 at a predetermined time to move the arm 41 outwardly and permit the clutch operating member 43 to move .to stop the machine.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a, feeding device for producing a spiral stitch, a shaft having a thread, a work holder slidably mounted on the shaft beyond the thread, a member disposed wholly atone side of the thread on the shaft and having a thread normally meshing with the thread on the shaft, and a spring secured member for normally holding the thread on the member yieldingly against the thread cured to the sleeve and to the member for normally holding the thread on the memher yieldingly against the thread on the shaft.

3. In a feeding device for producing a spiral stitch, a shaft having a thread, a sleeve slidably and rotatably mounted on the shaft beyond the thread, a work holder secured to the sleeve, a member having a thread normally meshing with the side of the thread on the shaft, a sprin'g secured to the sleeve and to the member for normally holding the thread on the member yieldingly against the thread on the shaft, and an arm extending from the sleeve for controlling a sewing machine stopping means.

4. In a feeding device for producing a spiral stitch, a shaft having a thread, a sleeve slidably and rotatably mounted on the shaft beyond the thread, a work holder secured to the sleeve, a member having a thread normally meshing with the side of the thread on the shaft, a spring secured to the sleeve and to the member for normally holding the thread on the member yieldingly against the thread on the shaft, a hearing in the sleeve, an arm adjustable in the bearing, and means for securing the arm in thebearin being adapted to control a sewing machine stopping means.

5. In a feeding device for producing a spiral stitch, an open frame, a shaft journaled in bearings within the frame, a plate having brackets secured to the outer side of the frame, hearings in the brackets, a shaft having a thread, j ournaled in the bearings in the brackets, a sleeve slidably mounted on the second shaft beyond the thread, a workholder mounted on thesleeve, a spring mounted on the sleeve, a half nut mounted on the spring and normally held thereby in yielding engagement with the thread on the second shaft, and means by whichthe first shaft is adapted to drive the second shaft.

6. In a feeding device for producing a spiral stitch, a plate having brackets, bearings in the brackets, a shaft having a thread, j ournaled in the bearings in the brackets, a sleeve slidably mounted on the shaft beyond the thread,.a work holder mounted on 'the sleeve, a spring mounted on the sleeve, and a half nut mounted on the spring and normally held thereby in yielding engagement with the thread on the shaft.

in adjusted position, the arm I 7. In a feeding device for producing a spiral stitch, a work holder having a flat bottom plate and sides extendin upwardly from the opposite sides of the p ate, an upper plate hinged to one of the sides, and means to secure the upper plate to the other side of the work holder.

8. In combination with a sewing machine,

an attachment having a shaft and a sleeve slidable on the shaft, a work holder secured to the sleeve and having a flat bottom plate and sides extending upwardly from the opposite sides of the plate, an upper plate hinged ,to one of the sides, and means to secure the upper plate to the other side of the work holder.

9. In a feeding device for producing a spiral stitch, a shaft having a thread, a sleeve slidable and rotatable on the shaft beyond the thread, a work holder member secured to the sleeve and having sides, an

upper work holder member hinged to one of the sides, means to secure the upper work holder member to the other side, a member having a thread normally meshing with a side of the thread on the shaft, and a spring secured relatively to the sleeve and to the member for normally holding the thread on the member yieldingly against the thread on the shaft.

10. In combination with a sewing machine, a work holder through which a fabric may be fed in one direction, means to move the work holder with the fabric in another direction as the fabric moves through the work holder, a rocking member having two arms, one for engaging a clutch operating member, and a third arm movable with the work holder for engaging the other arm of the rocking member when the work holder moves a predetermined distance.

HERMAN ADLER. 

